Công nghệ SMT máy DEK hệ thống camera system module CAMERA SYSTEM MODULE OVERVIEW ELECTRICAL SCHEMATIC ADJUSTMENTS AND SETTINGS REPLACEMENT PROCEDURES CALIBRATIONS AND CHECKS APPENDIX A VISION SYSTEM SET UP
CAMERA SYSTEM MODULE OVERVIEW CHAPTER 22 CAMERA SYSTEM MODULE OVERVIEW 15 14 13 12 11 10 Figure 22-1 Camera Overview Rotary Drive Item Description Item Description Camera Y Home Sensor Green/Gold Camera Assembly Camera Y Home Vane 10 Camera X Home Vane Y Axis Timing Belt 11 Camera X Home Sensor Y Axis Right Hand Linear Bearing (mounted on bottom of right hand printhead) 12 Camera Mounted Board Stop & Board Stop Extended Sensor X Axis Linear Bearing 13 Camera X Axis Support Platform (shown transparent for clarity) X Axis Timing Belt 14 Camera X Motor Node Board at Stop Sensor 15 Camera Y Motor Node Y Axis Left Hand Linear Bearing (mounted on bottom of left hand printhead) Chapter Issue Dec 10 Technical Reference Manual 22.1 CAMERA SYSTEM MODULE OVERVIEW 11 10 5 16 15 9 14 12 13 View on End of Camera Figure 22-2 Camera Overview Linear Drive Item Description Item Description Camera Y End Stop Camera Assembly Camera Y Home Vane 10 Camera Mounted Board Stop & Board Stop Extended Sensor Camera Y Encoder 11 Camera Y Home Sensor Camera Y Magnet Track 12 Camera X Home Vane Linear Bearing (in positions) 13 Camera X Encoder Camera X Axis Linear Bearing 14 Camera X Forcer Camera X Axis Support Platform 15 Camera X Magnet Track Board at Stop Sensor 16 Camera X Home Sensor 22.2 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE OVERVIEW The camera assembly traverses horizontally in the X and Y axis to position the camera to carry out the following functions: • Board Stop • Fiducial Capture - for screen to board alignment • Site Capture - pre and post printing for 2Di inspection Positioning of the camera assembly is carried out by the X and Y drive mechanisms There are two types of drive system, linear servo motor systems and rotary servo motor systems The camera contains an optical unit for image focusing and a lighting unit for board and screen illumination during fiducial and 2D camera capture operations The camera carriage also contains the following: • Camera Board Stop • Board at Stop sensor • Board Stop Extended Sensor The camera board stop is a pneumatically driven unit which is lowered to stop the board in position ready for clamping and vision alignment to take place The board at stop diffuse background suppressed opto detects the board when it reaches the board stop This starts a timer which when elapsed stops the belts and clamps the board The board stop extended sensor is fitted to ensure that the board stop is raised before any camera carriage movement is demanded The camera positions are referenced from the home position Each camera axis only homes during initialisation, which can be from power-up or exiting diagnostics The camera system also provides the drive mechanism for the under screen cleaner The camera system contains one of the following cameras dependant on the specification of the machine and what options are fitted: Chapter Issue Dec 10 • Graphite • Green • Gold • Hawkeye 750 • Hawkeye 1700 Technical Reference Manual 22.3 22.4 Technical Reference Manual USB Power GND TP BTP B+ TP ATP A+ NextMove ES (I/O Node 1) NextMove Interface CAN Bus M36PL35 M36PL11 M36PL16 10SK13 Trigger 0V +24V US 0V 10PL17 CAN In N2SK2 N2PL4 0V 16SK14 DIG OUT 10 Main Machine I/O Node CAN Out N2SK3 16SOL14 Board Stop Board Stop Extended 10SE20 10SK24 0V Camera Y Signal Home 10SE02 24V Fork Opto (L) DIG IN +12V DIG IN 0V N9PL1 N9SK3 CAN Encoder/ Decoder Camera Y Motor Node 0V Camera X Signal Home 10SE01 24V Fork Opto (L) DIG IN CAN Encoder/ Decoder Camera X Motor Node Board At Stop 10SE07 CAN In CAN Out N9PL4 N9SK2 N8PL1 CAN N8PL4 Terminator CAN In N8SK3 N8SK2 +12V DIG IN 0V Digital Camera Servo DC Supply & 24V US (Motor Logic) Servo DC Supply & 24V US (Motor Logic) M36 Machine Control Enclosure M37PL19 M37PL18 NOTE The breaks in the CAN Bus chain reflect that additional I/O Nodes may be fitted, refer to Machine Control chapter for the complete CAN Bus chain Motherboard B u s P C I PCI Interface Card PC Power Distribution PCB M37 Power Supply Module CAMERA SYSTEM MODULE ELECTRICAL SCHEMATIC ELECTRICAL SCHEMATIC Figure 22-3 Rotary Drive Schematic Chapter Issue Dec 10 Chapter Issue Dec 10 Technical Reference Manual 3PL55 USB NOTE The breaks in the CAN Bus chain reflect that additional I/O Nodes may be fitted, refer to Machine Control chapter for the complete CAN Bus chain HawkEye encoder edge connector is fitted to Axis (M36PL06) when the HawkEye option is used Motherboard B u s P C I PCI Interface Card PC EuroFlex Axis A OUT See Note EuroFlex Axis A OUT NextMove ES (I/O Node 1) NextMove Interface M36 Machine Control Enclosure 10SK34 10SK32 M36PL02 M36PL01 10SK30 10SK31 M36PL05 10SK29 CAN In 10SK24 10SK13 10PL17 10SK38 10SK37 Motor 3~ Hall W+ Hall V+ Hall U+ Camera Y Encoder 10EN2 Camera X Encoder 10EN1 16SOL14 Board Stop Camera X Home 10SE01 Camera Y Home 10SE02 Board Stop Extended 10SE20 Hall W+ Hall V+ Hall U+ Y Linear Motor Motor 3~ X Linear Motor Digital Camera Board At Stop 10SE07 N2PL4 0V 16SK14 DIG OUT 10 10SE02 +12V DIG IN 0V (L) 10SE01 Main Machine I/O Node +12V DIG IN 0V (L) N2SK2 10SK33 M36PL03 Trigger 0V +24V US 0V +12V DIG IN 0V +12V DIG IN 0V 8SK27 8PL27 M36PL06 M36PL07 CAN Bus M36PL35 M36PL15 M36PL19 M36PL11 M36PL16 Power GND TP BTP B+ TP ATP A+ CAMERA SYSTEM MODULE ELECTRICAL SCHEMATIC Figure 22-4 Linear Drive Schematic 22.5 CAMERA SYSTEM MODULE ADJUSTMENTS AND SETTINGS ADJUSTMENTS AND SETTINGS X Camera Home Positioning The position of the sensor and vane is fixed, therefore no adjustment is possible Y Camera Home Positioning The position of the sensor and vane is fixed, therefore no adjustment is possible X Axis Parallelism WARNING BOARD CLAMPS EXTREME CARE MUST BE EXERCISED WHEN WORKING IN THE TOOLING AREA OF THE MACHINE TO AVOID INJURY THE FOILS ON THE FRONT AND REAR BOARD CLAMPS ARE VERY SHARP WARNING STRONG MAGNET FIELD A STRONG MAGNETIC FIELD EXISTS IN THE VICINITY OF THE LINEAR MOTORS THIS MAY PRESENT A HAZARD TO PERSONNEL OR EQUIPMENT PROHIBITION STRONG MAGNETIC FIELD A STRONG MAGNETIC FIELD EXISTS IN THE VICINITY OF THE LINEAR MOTORS THIS MAY REPRESENT A SERIOUS HAZARD TO PERSONNEL FITTED WITH A PACEMAKER PROHIBITION STRONG MAGNETIC FIELD A STRONG MAGNETIC FIELD EXISTS IN THE VICINITY OF THE LINEAR MOTORS THAT REPRESENT A SERIOUS HAZARD TO PEOPLE FITTED WITH METALLIC IMPLANTS PROHIBITION STRONG MAGNETIC FIELD A STRONG MAGNETIC FIELD EXISTS IN THE VICINITY OF THE LINEAR MOTORS THAT MAY ACT UPON FERROUS OBJECTS WHOSE MOVEMENTS COULD LEAD TO PERSONAL INJURY AND/OR DAMAGE TO THE MACHINE NOTE The X axis parallelism is factory set and shouldn’t normally need to be adjusted Select Open Cover Commands Select Carriage To Rear Select Unload Screen Open the front printhead cover Remove the screen from the machine Close the front printhead cover Press the System button Select Back 22.6 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE ADJUSTMENTS AND SETTINGS Select Maintenance 10 Select Diagnostics 11 Use Next or Previous to highlight Rail System 12 Select Select Module 13 Ensure that Home Rail Width is highlighted 14 Select Run Diagnost 15 Select Exit 16 Use Next or Previous to highlight Rising Table 17 Select Select Module 18 Use Next or Previous to highlight Raise Table to Vision Height 19 Select Run Diagnost 20 Select Exit 21 Use Next or Previous to highlight Rail System 22 Select Select Module The board clamps are released 23 Open the front printhead cover 24 Remove any tooling from the manual tooling plate 25 Remove the board clamp from the front transport rail, Board Clamp Replacement - Replacement Procedures section of the Transport Rails Module chapter refers 26 There are two versions of the rail setting jig (DEK Part No 191156) and they are labelled: Chapter Issue Dec 10 • Standard Rails (round belts) • Heavy Board Rails (flat belts) Technical Reference Manual 22.7 CAMERA SYSTEM MODULE ADJUSTMENTS AND SETTINGS 27 Confirm which type of rails are fitted to the machine and select the appropriate rail setting jig 28 Place the jig on the manual tooling plate ensuring that the location pins on the underside of the jig abut the front face of the manual tooling plate Check there is no gap using a 0.05mm feeler gauge Rail Setting Jig Manual Tooling Plate Location Pin View on Left Hand Side 29 Secure the jig to the front rail using the two jig to rail thumbscrews Jig to Rail Thumbscrew Jig to Table Thumbscrews Jig to Rail Thumbscrew View on Rear of Transport Rails 30 Secure the jig to the rising table using the two jig to table thumbscrews 31 Check that the location pins are up against the front edge of the manual tooling plate using a 0.05mm feeler gauge, as in Step 28 22.8 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE ADJUSTMENTS AND SETTINGS 32 Using feeler gauges check that the gap between both alignment pads and the belt support plate of the front rail is 0.25mm ±0.05mm Alignment Pad Feeler Gauge Belt Support Plate View on Rear of Transport Rails 33 If adjustment is necessary refer to the Transport Rails Module chapter Adjustments and Settings - Front Rail Parallelism 34 Bring the camera carriage X axis support platform into contact with the camera alignment pins Camera Alignment Pins (2 positions) Shim 0.25 mm Linear Bearing Camera X Axis Support Platform Alignment Jig Rising Table 0.25 mm View on Arrow A (Camera Y Axis Removed) Shim 0.25 mm Camera Alignment Pins (2 positions) A Camera Parallelism Check Chapter Issue Dec 10 Technical Reference Manual 22.9 CAMERA SYSTEM MODULE ADJUSTMENTS AND SETTINGS 35 Look for a gap between the camera alignment pins and the linear bearing on the front edge of the camera X axis support platform, if no gap exists adjustment is unnecessary Continue from Step 48 36 If a gap exists, carefully attempt to insert a 0.25mm shim between the alignment pin and the linear bearing on the front edge of the camera X axis support platform If the shim cannot be fitted the gap is less than 0.25mm and adjustment is unnecessary Continue from Step 48 37 If a gap exists which is greater than 0.25mm adjustment is necessary 38 For machines with rotary motors continue with Step 39 For machines with linear motors go to Step 44 39 Loosen the three securing screws Camera X Motor Camera Y Motor View From Beneath Camera Carriage Securing Screws 40 Using a soft headed mallet gently tap the edge of the camera X axis support platform to close the gap on the camera alignment pins NOTE The camera can be severely damaged if excessive force is used to position the camera axis 41 Tighten the three securing screws taking care not to allow the position to slip 42 Check for parallelism again 43 Go to Step 48 22.10 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE REPLACEMENT PROCEDURES Replacing the Encoder and Encoder Strip (Linear Servo Motor Systems Only) If the encoder or encoder strip needs to be replaced, there is a special tool kit available which is used to maintain the correct alignment The tool kit uses a scale applicator, this temporarily replaces the encoder for laying the encoder strip The encoder set up involves setting the height and yaw correctly so that the encoder travels at the focused distance for reliable reading The tool kit is available from DEK Customer Support Group, contact the helpdesk for details 22.36 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS CALIBRATIONS AND CHECKS Board Stop X Offset Check WARNING BOARD CLAMPS EXTREME CARE MUST BE EXERCISED WHEN WORKING IN THE TOOLING AREA OF THE MACHINE TO AVOID INJURY THE FOILS ON THE FRONT AND REAR BOARD CLAMPS ARE VERY SHARP PROHIBITION STRONG MAGNETIC FIELD A STRONG MAGNETIC FIELD EXISTS IN THE VICINITY OF THE LINEAR MOTORS THAT MAY ACT UPON FERROUS OBJECTS WHOSE MOVEMENTS COULD LEAD TO PERSONAL INJURY AND/OR DAMAGE TO THE MACHINE Select Open Cover Commands Select Carriage To Rear Select Unload Screen Open the front printhead cover Remove the screen Close the front printhead cover Press the System button Select Back Select Maintenance 10 Select Diagnostics 11 Use Next or Previous to highlight Camera Axes 12 Select Select Module 13 Use Next or Previous to highlight Home Camera X Axis 14 Select Run Diagnost 15 Use Next or Previous to highlight Home Camera Y Axis 16 Select Run Diagnost 17 Use Next or Previous to highlight Drive to Board Stop Position 18 Select Run Diagnost 19 Select Exit 20 Use Next or Previous to highlight Rail System 21 Select Select Module 22 Use Next or Previous to highlight Toggle Board Stop 23 Select Run Diagnost 24 Open the front printhead cover 25 Place a board onto the rails and move it up against the board stop 26 Close the front printhead cover 27 Press the System button 28 Use Next or Previous to highlight Toggle Board Clamp Chapter Issue Dec 10 Technical Reference Manual 22.37 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 29 Select Run Diagnost 30 Use Next or Previous to highlight Toggle Board Stop 31 Select Run Diagnost 32 Select Exit 33 Use Next or Previous to highlight Camera Axes 34 Select Select Module 35 Use Next or Previous to highlight Initialise Vision System 36 Select Run Diagnost 37 Select Exit 38 Open the front printhead cover 22.38 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 39 Place a non-magnetic rule flat against the board edge and slide a second rule so that it abuts it and comes within the camera field of view Metric Rule Camera Camera Board Stop Metric Rule Board Plan View Metric Rule Metric Rule Side View 40 On the vision monitor, record the distance from the board edge to the approximate centre of the square (figure below refers) This value is the Board Stop X Offset and should be -43.5mm ±0.5mm 43 44 45 46 NOTE The numerals on the rule may not be directly in the field of view, move the rule until the numerals are visible in the vision window Lay the rule flat on the board, not lift or angle it as this can distort the measurement As the board stop is before the camera the distance is recorded as a minus reading 41 Remove the rule from the machine 42 Close the front printhead cover 43 Press the System button 44 Select Exit 45 During Initialisation, remove the board from the transport rails when prompted 46 Select Continue Chapter Issue Dec 10 Technical Reference Manual 22.39 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 47 Select Back 48 Select Maintenance 49 Select Machine Setup 50 Select Basics 51 Select Board Stop X Offset 52 Enter the dimension obtained in Step 40 53 Select Accept 54 Select Back 55 Select Back 56 Select Back Vision System Calibration For the vision alignment to function accurately a full system calibration is required This should be carried out by the maintenance personnel at the required period The calibration of the vision system is carried out in two stages using a calibration screen (Part No 134764) and a calibration board (Part No 134765) The first stage, Calibrate Vision, details the calibration of X, Y and Theta Calibrate Video X, Y calculates the screen movement in millimetres to vision system pixels This is achieved by looking up at the calibration screen fiducials and moving the screen in the X and Y directions by a fixed amount, for each of the 25 fiducials The movements are calculated for each fiducial and the mean taken This average screen movement is recorded and used as part of the calibration data Calibrate Theta calibrates the screen theta movement The camera selects three screen fiducials and the screen moves in theta (using the two X axes and implementing +2mm in X rear and -2mm in X forward to achieve the theta movement) The movements are calculated for each fiducial and the average taken The data is recorded and the calibration is complete The second stage, Calibrate Offset is to compensate for any optical discrepancies of the telecentric camera between viewing up and down This is achieved by printing the calibration screen and measuring the differences between the centroid of the screen fiducials and the centroid of the printed fiducials The average of these differences are calculated, recorded and used as part of the calibration data Calibration Procedure NOTE The vision height adjustment must be carried out prior to calibrating the vision system The calibration sequence is as follows: Stage Calibrate Vision 22.40 • Stage - Calibrate Vision • Stage - Calibrate Offset NOTE DEK recommends that the calibration board and screen are cleaned with Isopropyl Alcohol (IPA) impregnated lint free wipe prior to calibrating vision or Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS offset Select Maintenance Select Machine Setup Ensure that the Screen Size parameter is set to 265 Select Back Select Back Select Setup Product Select Load Product Select Calibra Select Load 10 Select Back 11 Select Back 12 Select Unload Screen 13 Open the front printhead cover 14 Remove the screen and fit the calibration screen 15 Close the front printhead cover 16 Press the System button 17 Select Setup Product 18 Select Fiducials 19 Select Global Settings 20 Ensure that Alignment Mode is set to Fiducial 21 Select Back 22 Select Back 23 Select Back 24 Select Maintenance 25 Select Calibrations 26 Select Vision 27 Select Screen OK 28 Select Use Screen, if displayed 29 Load the calibration board on to the input conveyor 30 Select Auto Board, the board moves to the board stop position 31 Select Step, the board is clamped and the board stop retracts 32 Select Step, the camera moves to the first screen fiducial and the squeegee moves to dwell height 33 Using the Incr and Decr buttons and viewing the right hand side of the vision monitor, position the screen fiducial so that it is placed centrally with the box displayed 34 Select Step, the camera moves to the second screen fiducial Position the fiducial centrally with the box as previously described Chapter Issue Dec 10 Technical Reference Manual 22.41 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 35 Select Step, the camera moves to the third screen fiducial Position the fiducial centrally with the box as previously described 36 Select Step, the camera moves to the fourth screen fiducial Position the fiducial centrally with the box as previously described 37 Select Step The control screen displays the following message, ‘Printer configuration data file saved’ 38 Select Board Fid Setup and set up the board fiducial on the left side of the vision monitor NOTE If the board fiducial is not visible and cannot be brought into view by small adjustments, in the camera axis diagnostic, check the reference position on the front rail If the front rail reference position is incorrect, adjust its position If the reference position is correct contact Customer support Group for assistance See also NOTE below 22.42 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 39 If any changes have been made, select Learn Fiducial If no changes have been made, select Locate Fiducial 40 Select Exit 41 Select Scrn Fid Setup and set up the screen fiducial on the right side of the vision monitor 42 If any changes have been made, select Learn Fiducial If no changes have been made, select Locate Fiducial 43 Select Exit 44 Select Single, the camera locates all 25 fiducials 45 Select Continue 46 Select Auto Board 47 Remove the board from the transport rails 48 If the Calibrate Offset is to be performed, go to Step of Stage - Calibrate Offset 49 Select Exit 50 Select Back NOTE If for any reason the camera cannot locate the board or screen fiducial, select Fiducial Setup and relearn the fiducial, (refer to Appendix A - Vision System Set Up for details on setting up the fiducial recognition strategy) Select Retry the sequence continues and should not have any detrimental effect on the calibration Stage Calibrate Offset NOTE DEK recommends that the calibration board and screen are cleaned with Isopropyl Alcohol (IPA) impregnated lint free wipe prior to calibrating vision or offset Select Setup Product Select Load Product Select Calibra Select Load Select Back Select Back Select Open Cover Commands Select Carriage to Rear Select Unload Screen 10 Open the front printhead cover 11 Remove the screen 12 Equally space 25 tooling pins on the table 13 Fit the calibration screen 14 Close the front printhead cover 15 Press the System button Chapter Issue Dec 10 Technical Reference Manual 22.43 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 16 Select Load Screen 17 Select Back 18 Select Maintenance 19 Select Calibrations 20 Select Offset 21 Select Setup OK 22 Place the calibration board with the fiducials downward facing onto the upline conveyor 23 Select Auto Board, the board moves to the board stop position 24 Select Step, the board is clamped and the board stop retracts 25 Select Step, the camera moves to the first screen fiducial and the squeegee moves to dwell height 26 Using the Incr and Decr buttons, position the screen fiducial (right hand image) so that it is placed centrally with the box displayed 27 Select Step, the camera moves to the second screen fiducial Position the fiducial centrally with the box as previously described 28 Select Step, the camera moves to the third screen fiducial Position the fiducial centrally with the box as previously described 29 Select Step, the camera returns to the home position and the rising table moves to the print height position 30 Select Step, the print carriage moves to the rear position 31 Open the front printhead cover 32 Apply paste to all 25 positions on the screen 33 Close the front printhead cover 34 Press the System button 35 Select Step 36 Select Step 37 Select Accept, the table drops and the camera moves to the first fiducial 38 Select Brd Fid Setup and carry out Fiducial Setup procedure as described in Appendix A - Vision System Set Up 39 If any changes have been made, select Learn Fiducial If no changes have been made, select Locate Fiducial 40 Select Exit 41 Select Scrn Fid Setup and carry out Fiducial Setup procedure as described in Appendix A - Vision System Set Up 42 If any changes have been made, select Learn Fiducial If no changes have been made, select Locate Fiducial 43 Select Exit 44 Select Step, the Offset results are displayed 45 Select Single, the camera moves to each of the 24 remaining fiducial positions in turn 22.44 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS 46 Select Auto Board, the board data file is saved 47 Remove the board from the transport rails 48 Select Exit 49 Select Back Chapter Issue Dec 10 Technical Reference Manual 22.45 CAMERA SYSTEM MODULE CALIBRATIONS AND CHECKS NOTE DEK recommends that the calibration screen is cleaned with Isopropyl Alcohol (IPA) impregnated lint free wipe on completion of the offset calibration If for any reason the camera cannot locate the board or screen fiducial (except for poor prints), select Fiducial Setup and relearn the fiducial, (refer to Appendix A - Vision System Set Up for details on setting up the fiducial recognition strategy) Select Retry, the sequence continues and does not have any detrimental effect to the calibration Associated Calibrations Camera Replacement Motor Replacement Belt Replacement Belt Tension Vision Height X Axis to Front Rail Parallelism Camera Reference Position Vision Calibration Offset Calibration Figure 22-5 Associated Calibrations NOTE For information on the Test Cycles function see the Screen Alignment Chapter 22.46 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE APPENDIX A - VISION SYSTEM SET UP APPENDIX A - VISION SYSTEM SET UP Preparing the Vision System The following procedure is typical for all fiducial shapes, although in this procedure a circle fiducial shape is referred to throughout Select Setup Product Select Fiducials Select Load Board Place a board on the input side of the rails Select Auto Board Select Fiducial Setup The following window is displayed: DEK Setup\Fiducials\Fiducial Setup Language Fiducials Board Fiducials Board Fiducials Board Selective Print Pass Through Auto Setup Fiducials Screen Shape Manual Setup Interactiv Help Lighting Search Width Large View Board Fiducial 1X Board Fiducial 1Y Contours Inner Contours Outer Accept Score Background Fiducials Screen Fiducials Screen Move Graphic Camera Up Camera Left Exit Chapter Issue Dec 10 Learn and Locate Locate Technical Reference Manual Move Camera Move Amount X1 Camera Right Camera Down 22.47 CAMERA SYSTEM MODULE APPENDIX A - VISION SYSTEM SET UP Select the board or screen fiducial that requires setting up Select Shape to change the fiducial type The options are: • Circle • Rectangle • Diamond • Triangle • Double Square • Cross • Video Model NOTE Video Model allows a unique feature to be used instead of a standard fiducial shape 10 Select Width to change the overall width of the fiducial 11 Select Board/Screen Fiducial # X to change the location of the fiducial in the X direction The dimension is measured from the left hand side edge of the board to the centre of the fiducial 12 Select Board/Screen Fiducial # Y to change the location of the fiducial in the Y direction The dimension is measured from the front edge of the board to the centre of the fiducial 13 Select Contours Inner to setup the area within the fiducial to be ignored by the vision system 14 Select Contours Outer to setup the area outside the fiducial to be ignored by the vision system 15 Select Accept Score to setup the level as to whether a found fiducial should be accepted or rejected 16 Select Background to select whether the area surrounding the fiducial is lighter or darker in comparison to the fiducial colour 17 Select the Lighting tab 18 Adjust the lighting parameters to a level whereby the fiducials just ‘white out’, without blooming Default level on both Vertical and Oblique is usually adequate for the majority of fiducials 19 Select the Manual Setup tab 20 If any changes have been made, go to Step 21 If no changes have been made, go to Step 23 21 Select Learn and Locate A figure appears on the monitor indicating the score of the fit between the synthetic fiducial and the actual fiducial The synthetic fiducial parameters may need resetting and re-learning to obtain a better figure if there are other features in the camera window 22 Select Continue 23 Select Locate 24 Repeat Steps to 20 for other fiducials that require setting up 22.48 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE APPENDIX A - VISION SYSTEM SET UP 25 Select Exit 26 Select Unload Board 27 Select Auto Board 28 Select Back 29 If the changes are permanent and need to be saved in the product file, go to Step 30 If the changes are temporary, go to Step 31 NOTE If the changes are not saved, the changes remain in memory until the machine is shut down or another product file is loaded 30 Select Save 31 Select Back 32 Remove the board from the rails The above procedure is for a circular fiducial There are some extra parameters for the other fiducials which are listed in the table below: Video Model Rounding Height Rotation Leg Width Rectangle Yes Yes Yes No Diamond No Yes Yes No Triangle No Yes Yes No Double Square No Yes Yes No Cross No Yes Yes Yes If a board has no fiducials or the condition of the fiducials prevents satisfactory recognition, the user can employ video models as an alternative to fiducials Video models use the relationship between the image of an area of the stencil and the same area of the board to align the board and stencil The area of the board selected for use as a video model should have shapes with consistent, solid boundaries The shape should also have edges in both the X and Y planes to produce an image with good X and Y information for accurate positioning There are three video model types: Chapter Issue Dec 10 • Auto - Uses a video model type best suited to the type of fiducial being learnt • Type - Uses a geometric pattern matching technique to produce a synthetic model of the feature to be learnt Best suited to features that are not replicated in the camera field of view A unique view is ideal for this model • Type - Uses a reference image to make a template of all the features and the board background within the camera field of view and uses comparison techniques to locate the model A good choice where there is duplication in the image such as a BGA device or QFP pad Technical Reference Manual 22.49 CAMERA SYSTEM MODULE APPENDIX A - VISION SYSTEM SET UP 22.50 Technical Reference Manual Chapter Issue Dec 10 .. .CAMERA SYSTEM MODULE OVERVIEW 11 10 5 16 15 9 14 12 13 View on End of Camera Figure 22-2 Camera Overview Linear Drive Item Description Item Description Camera Y End Stop Camera Assembly Camera. .. Move Graphic Camera Up Camera Left Exit Chapter Issue Dec 10 Learn and Locate Locate Technical Reference Manual Move Camera Move Amount X1 Camera Right Camera Down 22.47 CAMERA SYSTEM MODULE APPENDIX... 14 Camera X Forcer Camera X Axis Support Platform 15 Camera X Magnet Track Board at Stop Sensor 16 Camera X Home Sensor 22.2 Technical Reference Manual Chapter Issue Dec 10 CAMERA SYSTEM MODULE